Patent
Process for purification of gases and exhaust gases
TLDR
In this paper, a method for purifying gases and waste gases of acidifying gases, such as hydrogen chloride, hydrogen fluoride, sulfur dioxide and hydrogen cyanide, nitrogen oxides, hydrocarbons, chlorinated hydro-carbons and volatile heavy metals such as mercury, arsenic, antimony, cadmium and thallium, is described.Abstract:
The invention relates to a method for purifying gases and waste gases of acidifying gases, such as hydrogen chloride, hydrogen fluoride, sulfur dioxide and hydrogen cyanide, nitrogen oxides, hydrocarbons, chlorinated hydrocarbons, organic compounds and volatile heavy metals such as mercury, arsenic, antimony, cadmium and thallium. The gas or waste gas stream calcium hydroxide is admixed to the process was the added after deleting quicklime activated carbon, Braunkohlenherdofenkoks, activated alumina and / or silica gel. The purification is carried out in a temperature range from 20 to 1200 degrees, and the deposition of the solids takes place at Staubabscheidevorrichtungen.read more
Citations
More filters
Patent
Additive to be sprayed into the combustion chambers of heating plants and process for preventing high temperature corrosion
TL;DR: In this paper, the additive consists of acid activated bentonite and/or oxide melts, in particular glass powder or glass dust with a melting point below 1000 ~C, and is sprayed into the gas chamber in areas in which the gas temperature exceeds 700 ~C.
Patent
Method and device for treating exhaust gas from sintering or pelletizing systems
TL;DR: In this paper, a method for removing SO 2 from exhaust gas from sintering or pelletizing systems, where dry additive comprising one or more members of the group comprising adsorbent, recirculated material, and alkaline-earth-based reagent is added to an exhaust gas flow comprising the exhaust gas.
Patent
Process for preventing high temperature corrosion
TL;DR: In this paper, an additive consisting of acid activated bentonite and/or oxide melts, in particular glass powder or glass dust with a melting point below 1000 DEG C, is used to prevent high temperature corrosion and to reduce the fly ash proportion in the exhaust gas.
Patent
Rheology-modifying agents for slurries
TL;DR: In this paper, a rheology modifying agent may be added to a slurry and the slurry may include lime and/or magnesium hydroxide; the agent may include a polymer and the polymer may include at least three chemically different monomers.
References
More filters
Patent
Process for separating acid polluting gas and combustion plant
Lindbauer Ralf,Alfred Glasner +1 more
TL;DR: In this paper, a twin stage sorption process with different sorbents in different temperature ranges, for example 1,000oC and 400oC, is proposed to separate noxious substances from flue gas after combustion plants, where a substantial cooling of the fumes between the two sorbent supply points and a separation of the first sorption agent already used are considered as important steps, so that a cost reduction of the sorption agents and of the absolute amounts of sorbent, as well as a separation degree comparable to that of a wet process method are obtained.
Patent
Process for preparing finely divided calcium hydroxide
TL;DR: The preparation of finely divided calcium hydroxide starts in a manner known per se from quicklime (calcium oxide) which is reacted to calcinedime (slaked lime) in a conventional slaking apparatus by means of water and additives, with the additives used being, on the one hand, sugar or sugar-containing compounds to achieve a high specific surface area and on the other hand, glycols, amines and other milling aids to increase the flowability of the calcinedite powder formed as mentioned in this paper.
Patent
Soda lime composition
TL;DR: In this paper, the production of military soda limes, which must possess increased resistance to hydrocyanic acid gas and phosgene, is described. But the present military limes are produced by mixing lime and...
Patent
Dry adsorption of hydrogen chloride and opt. sulphur di:oxide - using porous adsorbent doped with metal oxide and activated and regenerated by heating in inert gas
TL;DR: In this article, dry adsorption of HCl from hot flue gas (from refuse incinerators) at ca. 100-500 (80-250) degrees C, which can also contain SO2, is carried out with an adsorbent (I) which is regenerated thermally.
Patent
Process for producing pellets which, inter alia, contain alkali metal oxides and/or alkaline earth metal oxides
TL;DR: In this article, the active composition of a particle-size fraction of CaO is used for cleaning flue gas or industrial gases, the pollutants after a quasi-catalytic reaction being deposited or chemically reacted on metal oxides, which process involves admixed with lime and kaolin as a binder.